From 51f6c268d39659599b2aa048b65a54f8625a5a27 Mon Sep 17 00:00:00 2001
From: Jacob Beck <jake@fishtownanalytics.com>
Date: Mon, 20 Jul 2020 09:54:25 -0600
Subject: [PATCH] add environment variables for logging

---
 CHANGELOG.md       |  5 +++++
 core/dbt/logger.py | 29 +++++++++++++++++++++--------
 2 files changed, 26 insertions(+), 8 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4e324ea5774..cd4a405f4ec 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+## dbt 0.17.2b1 (Release TBD)
+
+### Features
+- Added environment variables for debug-level logging ([#2633](https://github.com/fishtown-analytics/dbt/issues/2633), [#2635](https://github.com/fishtown-analytics/dbt/pull/2635))
+
 ## dbt 0.17.1 (July 20, 2020)
 
 ## dbt 0.17.1rc4 (July 08, 2020)
diff --git a/core/dbt/logger.py b/core/dbt/logger.py
index a209dbad31d..c65c812d0fb 100644
--- a/core/dbt/logger.py
+++ b/core/dbt/logger.py
@@ -597,15 +597,28 @@ def emit(self, record: logbook.LogRecord):
         self.records.append(as_dict)
 
 
-# we still need to use logging to suppress these or pytest captures them
-logging.getLogger('botocore').setLevel(logging.ERROR)
-logging.getLogger('requests').setLevel(logging.ERROR)
-logging.getLogger('urllib3').setLevel(logging.ERROR)
-logging.getLogger('google').setLevel(logging.ERROR)
-logging.getLogger('snowflake.connector').setLevel(logging.ERROR)
+def _env_log_level(var_name: str) -> int:
+    # convert debugging environment variable name to a log level
+    if dbt.flags.env_set_truthy(var_name):
+        return logging.DEBUG
+    else:
+        return logging.ERROR
+
+
+LOG_LEVEL_GOOGLE = _env_log_level('DBT_GOOGLE_DEBUG_LOGGING')
+LOG_LEVEL_SNOWFLAKE = _env_log_level('DBT_SNOWFLAKE_CONNECTOR_DEBUG_LOGGING')
+LOG_LEVEL_BOTOCORE = _env_log_level('DBT_BOTOCORE_DEBUG_LOGGING')
+LOG_LEVEL_HTTP = _env_log_level('DBT_HTTP_DEBUG_LOGGING')
+LOG_LEVEL_WERKZEUG = _env_log_level('DBT_WERKZEUG_DEBUG_LOGGING')
+
+logging.getLogger('botocore').setLevel(LOG_LEVEL_BOTOCORE)
+logging.getLogger('requests').setLevel(LOG_LEVEL_HTTP)
+logging.getLogger('urllib3').setLevel(LOG_LEVEL_HTTP)
+logging.getLogger('google').setLevel(LOG_LEVEL_GOOGLE)
+logging.getLogger('snowflake.connector').setLevel(LOG_LEVEL_SNOWFLAKE)
+
 logging.getLogger('parsedatetime').setLevel(logging.ERROR)
-# want to see werkzeug logs about errors
-logging.getLogger('werkzeug').setLevel(logging.ERROR)
+logging.getLogger('werkzeug').setLevel(LOG_LEVEL_WERKZEUG)
 
 
 def list_handler(